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Hydra Island
[[{{{Video}}}|Orientation Video]]
First seen
Last seen
Constructed by
Natural forces
Controlled by
Survivors of Ajira 316
Discovered by

Hydra Island is a second, smaller island sitting offshore from the main island. The island takes its name from the DHARMA Initiative's Hydra station which is located there, as stated by Dr. Chang in "Some Like It Hoth".

It is described by Ben in "Every Man for Himself" as being about the twice the size of Alcatraz Island, which makes the land area about 0.06 square miles (just under 1/4 mile by 1/4 mile). However, in subsequent appearances, particularly when seen by air in "Namaste", the island appears somewhat larger, with large hills and expanses of jungle.

The distance from Hydra Island to the main island is unclear. Both Juliet ("Not in Portland") and Sawyer ("I Do") report that Hydra Island is "about 2 miles offshore" of the main Island. Ben, however, directs Lapidus to a small dock on the main Island approximately a half mile due south from Hydra Island. This portion of coastline is close to the Barracks. ("Namaste")

Hydra Island went unnamed on the show until "Some Like It Hoth" (when Dr. Chang threatened to have Hurley reassigned to Hydra Island where he would "weigh polar bear turds for their ridiculous experiments").

Hydra Island moved along with the main island through space and time. ("There's No Place Like Home, Parts 2 & 3").



Saywer uses behaviorial training device for food. ("A Tale of Two Cities")

The DHARMA Initiative used the second Island as the location for the Hydra, a Zoological Research Station. Their facility included an aquarium with an underwater section where Jack was held prisoner. Additionally there were outdoor cages with facilities for Skinnerian-style conditioning. ("A Tale of Two Cities")

The Others

Jack operates on Ben at the Hydra. ("I Do")

The Others used the Station after the downfall of the DHARMA Initiative. This island is not where the Others lived, but rather where they worked on what they refer to as "projects". Most Others prefered to remain at "home"on the main island.

Sawyer and Kate leave Hydra Island in a sailing canoe. ("Not in Portland")

After their capture, Jack, Kate and Sawyer, were brought to Hydra Island. ("A Tale of Two Cities") Jack was held in a room under the aquarium, while Kate and Sawyer were jailed in cages above ground. The station has an operating room where Jack performed surgery on Ben. ("I Do") Kate and Sawyer were employed as laborers in the construction of a runway. While Sawyer and Kate were imprisoned, Tom remarked on the speed with which the cage's previous inhabitants ("the bears") had solved the conditioning puzzle. Thus the extent to which The Others were involved in, or were aware of, the DHARMA Initiative's activities on Hydra Island remains open to speculation.

The Others had at least one large boat that provided transport to and from Hydra Island. The Others had also mentioned using a submarine to travel between the two islands. ("The Man from Tallahassee") Outrigger sailing canoes were used as well, one of which Alex gave to Sawyer, Kate and Karl to escape the island. Alex revealed that there was no tunnel between Hydra Island and the main Island. ("Not in Portland")

It is on Hydra Island that Juliet was branded with the mark for the death of Danny and her part in the escape of Kate and Sawyer. ("Stranger in a Strange Land") Some time after Jack, Kate and Sawyer left Hydra Island, The Others seem to have completed the runway and subsequently, may have abandoned the station.

Ajira Airways Flight 316

Co-Pilot killed during plane crash. ("Namaste")

As a result of the time shift that caused a mid-air stall, Ajira Airways Flight 316 attempted an emergency landing on Hydra Island in 2007. The pilot, Frank Lapidus, overshot the runway but managed to land the plane before blacking out. Upon awakeneing, Lapidus found his co-pilot dead, and many passengers seriously hurt. ("Namaste") Led by Ilana and Caesar, the passengers set up camp on the Hydra Island beach. They also fashioned one of the abandonned Hydra station buildings into an infirmary, where they attended to injured survivors.

John Locke welcomes Ben "back to the land of the living". ("Dead Is Dead")

Ben Linus showed Sun and Frank where he had hidden three dug-out canoes. Sun, who was untrusting of Ben, knocked him out cold with a paddle. Accompanied by Frank, Sun took a canoe and paddled to the main island to look for Jin. Ilana was also aware of the canoes and that one was taken by the pilot and "a woman" during the night. ("The Life and Death of Jeremy Bentham") At some point in time, Ben Linus was found injured and unconscious. He was taken to the make-shift infirmary at the Hydra, where he was awakened by the appearance of the deceased John Locke.At the Hydra, Ceasar found his way to Ben Linus' old office and recovered a map, a page from Daniel's journal and a shotgun. It is this same gun that Ben Linus used to kill Caesar, as Ben and Locke prepared to leave Hydra Island with one of the remaining outriggers. ("Dead Is Dead")

Frank Lapidus later returned to Hydra Island, only to be greeted at gunpoint by Ilana and Bram. After a confrontation with Ilana, Frank was knocked out with a rifle butt. When Frank regained consciousness, he was in a canoe with Ilana, Bram and a large metal crate. They, along with several other survivors of Flight 316, were on their way to the main island to look for the Others. ("The Incident, Parts 1 & 2")


A small island can be seen in background. ("Live Together, Die Alone")
  • Fan names for Hydra Island include "Falcatraz" (false Alcatraz) or "Lostcatraz". The producers once dubbed it "Damonville". (Official Lost Podcast/December 06, 2006)
  • There have been two notable occasions where a "second island" can been seen in the background during shots.
    • When Ana Lucia leads her group across the Island, a smaller island can be seen on the horizon (pictured). Note a second, smaller silhouette to the left of this island. ("Abandoned")
    • As Michael and Walt leave Pala Ferry a small island can briefly be seen behind the boat as it moves away. However, no island was visible when Sayid arrived at the pier on the sailboat. In reality this is an island offshore of Oahu known as Mokolii or Chinaman's Hat, which is much too small to be the Hydra Island, suggesting its appearance was merely a filming mistake. ("Live Together, Die Alone")
  • The producers said they always intended one of the smaller islands on Danielle's maps to be Hydra Island. (Official Lost Podcast transcript/March 26, 2007)

Unanswered questions

Unanswered questions
  1. Do not answer the questions here.
  2. Keep the questions open-ended and neutral: do not suggest an answer.
More details...
For fan theories about these unanswered questions, see: Hydra Island/Theories
  • Why does Hydra Island travel with the main island during time shifts?
  • Why did the DHARMA Initiative choose Hydra Island as the site for the Hydra station?


This article uses material from the "Hydra Island" article on the Lostpedia wiki at Wikia and is licensed under the Creative Commons Attribution-Share Alike License.


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